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In the period from July to September 2012, a survey was made of the number of burrows of blue land crab ( Cardisoma guanhumi ), both in twelve profiles distributed in areas of mangrove, positioned perpendicularly to the wetlands of the Una's River (Pernambuco) and Camaragibe's River (Alagoas), aiming to acquire information on the distribution of holes in different types of topographies. The depth of burrows and the salinity and temperature of the water at the bottom of the burrows was registered. In Pernambuco and Alagoas, the profiles covered steep areas (with a gradient of 4.5°) and shallow areas (with a gradient of 0.02°). The maximum distance between existing burrows in the profiles, ranged from 58m and 359.5m, compared to a benchmark level (RN). The burrows depths ranged from 0.45m to 1.90m, with an depth average of 0.99m (DP = 0,29). The maximum depth of the burrows can be justified by the fact that there is less availability of water in northeastern soils.It is recommended, studied the mangroves, the establishment of an exclusion zone to preserve the habitat of Cardisoma guanhumi , a distance of at least 200m above the high tide mark. Keywords:  blue land crab; mangrove; burrows.

biota amazônia

Caracterização Topográfica do Habitat do Cardisoma guanhumi Latreille, 1828 (Decapoda, Gecarcinidae) na Apa Costa dos Corais (Pernambuco e Alagoas, Brasil)